Version 4.0 of the webPOISONCONTROL® app provides a faster, more user-friendly design, enhanced symptom entry enabling more precise triage, a robust landing page, context-sensitive help tools, greater visibility into how recommendations were determined, fewer obstacles to case completion, substance search filters, product error reporting, more amount entry options, and access to a poison center hotline on each page. Substance, barcode, image and algorithm databases are greatly expanded.